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1949 Map of Johnson Lake

Name: 1949 Topographic Map of Johnson Lake
Creator: U.S. Geological Survey
Published: 1977
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1977

About this map

Fort Peck Indian Reservation defines the western edge of this northeastern Montana landscape, where the meandering course of Big Muddy Creek carves a deep valley through the high plains. Surveyed in the late 1940s, the map documents a transition from the preserved wetlands of the Medicine Lake National Wildlife Refuge to the managed water resources of the interior. The namesake Johnson Lake is a central feature, supported by a Dam and fed by seasonal flows from local coulees and Spring sources.

Local industry is represented by Gravel Pits located near the eastern boundary, indicating the extraction of glacial deposits for road building. The drainage network is complex, featuring several distinct tributaries including Muddy Creek, Sand Creek, and Sheep Creek, which dictate the topography of this Roosevelt County region. This sheet provides a clear view of the land management and hydrology of the Missouri River Basin development era.